Italian authorities say they have irrefutable proof that “the most prized ancient Greek vase in New York’s Metropolitan Museum of Art was looted. The Euphronios krater, described as one of the finest antiquities ever obtained by the Met, has been a source of controversy since the museum acquired it 33 years ago. Italian authorities have long maintained that the vase was looted from a tomb north of Rome, but the Met has refused to return it, saying the Italians lack proof.”